{"id":210065,"date":"2025-10-24T04:47:24","date_gmt":"2025-10-23T20:47:24","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210065\/"},"modified":"2025-10-24T04:47:25","modified_gmt":"2025-10-23T20:47:25","slug":"cdn-266","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210065\/","title":{"rendered":"CDN\u8bbf\u95ee\u5f02\u5e38\u76d1\u63a7\u4e0e\u5feb\u901f\u5904\u7f6e\uff1a\u5168\u6d41\u7a0b\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u7684\u4e92\u8054\u7f51\u73af\u5883\u4e2d\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u627f\u62c5\u7740\u52a0\u901f\u9759\u6001\u8d44\u6e90\u3001\u964d\u4f4e\u6e90\u7ad9\u8d1f\u8f7d\u548c\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u7684\u91cd\u4efb\u3002\u4e00\u65e6\u51fa\u73b0\u8bbf\u95ee\u5f02\u5e38\uff0c\u5f71\u54cd\u8303\u56f4\u5f80\u5f80\u8fc5\u901f\u6269\u6563\uff0c\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\u5fc5\u987b\u5177\u5907\u4ece\u76d1\u6d4b\u5230\u5feb\u901f\u5904\u7f6e\u7684\u5168\u6d41\u7a0b\u80fd\u529b\u3002\u672c\u6587\u4ece\u539f\u7406\u5230\u5b9e\u8df5\u3001\u4ece\u68c0\u6d4b\u7b56\u7565\u5230\u5e94\u6025\u5904\u7f6e\uff0c\u63d0\u4f9b\u4e00\u5957\u53ef\u64cd\u4f5c\u7684\u5b9e\u6218\u6307\u5357\uff0c\u5e2e\u52a9\u4f60\u5728\u9762\u5bf9 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4xx\/5xx\uff09\u3001\u4e22\u5305\u4e0e\u8fde\u63a5\u590d\u7528\uff08HTTP\/2\u3001QUIC\uff09\u7b49\u6307\u6807\u3002<\/li>\n<\/ul>\n<h3>\u540e\u7aef\u63a2\u9488\u4e0e\u65e5\u5fd7\u94fe\u8def<\/h3>\n<ul>\n<li>\u5728\u5e94\u7528\u548c CDN \u4e4b\u95f4\u5f00\u542f\u8be6\u7ec6\u8bbf\u95ee\u65e5\u5fd7\uff08\u542b x-forwarded-for\u3001via\u3001x-cache\uff09\u4ee5\u53ca\u56de\u6e90\u65e5\u5fd7\uff0c\u4fbf\u4e8e\u8ffd\u6eaf\u8bf7\u6c42\u5728 CDN \u5c42\u7684\u547d\u4e2d\u4e0e\u56de\u6e90\u60c5\u51b5\u3002<\/li>\n<li>\u6574\u5408 CDN \u63d0\u4f9b\u5546\u7684\u76d1\u63a7 API \u4e0e\u8fb9\u7f18\u65e5\u5fd7\uff08Edge Logs\uff09\uff0c\u5bfc\u5165\u5230 ELK\/EFK \u6216\u8005 ClickHouse\uff0c\u4fbf\u4e8e\u5b9e\u65f6\u67e5\u8be2\u4e0e\u5386\u53f2\u5206\u6790\u3002<\/li>\n<\/ul>\n<h3>\u544a\u8b66\u7b56\u7565\u4e0e SLI\/SLO<\/h3>\n<p>\u5b9a\u4e49\u5408\u7406\u7684 SLI\uff08\u670d\u52a1\u7ea7\u522b\u6307\u6807\uff09\u4e0e SLO\uff08\u76ee\u6807\uff09\uff1a\u5982\u201c\u5168\u7403 p99 \u54cd\u5e94\u65f6\u95f4  99.95%\u201d\u3002\u544a\u8b66\u5e94\u5206\u7ea7\uff1aP0\uff08\u5168\u7ad9\u4e2d\u65ad\uff09\u3001P1\uff08\u5173\u952e\u533a\u57df\u4e2d\u65ad\u6216\u4e25\u91cd\u6027\u80fd\u9000\u5316\uff09\u3001P2\uff08\u90e8\u5206\u9875\u9762\u5f02\u5e38\uff09\u3002\u5bf9\u63a5 PagerDuty\u3001OpsGenie \u6216\u4f01\u4e1a\u5185\u90e8\u7684 IM\uff08\u4f8b\u5982 Slack\/\u4f01\u4e1a\u5fae\u4fe1\uff09\uff0c\u786e\u4fdd\u4e8b\u4ef6\u7b2c\u4e00\u65f6\u95f4\u89e6\u8fbe\u503c\u73ed\u4eba\u5458\u3002<\/p>\n<h2>\u5feb\u901f\u5904\u7f6e\u5b9e\u6218\u6d41\u7a0b\uff1a\u4ece\u68c0\u6d4b\u5230\u6062\u590d<\/h2>\n<h3>\u7b2c\u4e00\u9636\u6bb5\uff1a\u5feb\u901f\u786e\u8ba4\u4e0e\u5206\u7ea7<\/h3>\n<ul>\n<li>\u786e\u8ba4\u8303\u56f4\uff1a\u901a\u8fc7\u5408\u6210\u76d1\u6d4b\u548c RUM \u5224\u65ad\u662f\u5355\u70b9\u3001\u533a\u57df\u8fd8\u662f\u5168\u7403\u5f02\u5e38\u3002<\/li>\n<li>\u786e\u8ba4\u8868\u73b0\uff1a\u662f\u8d85\u65f6\u3001\u9519\u8bef\u7801\uff08502\/503\/524\/525\uff09\u8fd8\u662f\u5185\u5bb9\u9519\u8bef\uff08HTML \u5185\u5bb9\u4e0d\u7b26\u5408\u9884\u671f\uff09\u3002<\/li>\n<li>\u8bb0\u5f55\u521d\u59cb\u4fe1\u606f\uff1a\u65f6\u95f4\u3001\u5f71\u54cd\u533a\u57df\u3001\u793a\u4f8b URL\u3001\u5178\u578b\u8bf7\u6c42\/\u54cd\u5e94\u5934\u3002<\/li>\n<\/ul>\n<h3>\u7b2c\u4e8c\u9636\u6bb5\uff1a\u5feb\u901f\u7f13\u89e3\u63aa\u65bd\uff08\u4f18\u5148\u987a\u5e8f\uff09<\/h3>\n<ul>\n<li><strong>\u5207\u6362\u5907\u4efd\u8282\u70b9\/\u56de\u6e90\uff1a<\/strong>\u5982\u679c\u662f\u6e90\u7ad9\u538b\u529b\u6216\u7f51\u7edc\u95ee\u9898\uff0c\u4f18\u5148\u5c06\u6d41\u91cf\u5f15\u5bfc\u5230\u5065\u5eb7\u7684\u6e90\uff08\u53ef\u901a\u8fc7 DNS\u3001\u8d1f\u8f7d\u5747\u8861\u6216 CDN \u7684\u56de\u6e90\u7b56\u7565\u8c03\u6574\uff09\u3002<\/li>\n<li><strong>\u4e34\u65f6\u4e0b\u7ebf\u7279\u5b9a\u89c4\u5219\uff1a<\/strong>\u5982\u679c\u662f WAF \u6216 rate limit \u8bef\u6740\uff0c\u4e34\u65f6\u653e\u5bbd\u89c4\u5219\u6216\u5c06\u53d7\u5f71\u54cd IP \u5730\u5740\u52a0\u5165\u767d\u540d\u5355\u3002<\/li>\n<li><strong>\u542f\u7528\u9759\u6001\u5316\/\u964d\u7ea7\u670d\u52a1\uff1a<\/strong>\u5c06\u9ad8\u9891\u8d44\u6e90\u8bbe\u4e3a longer cache\uff0c\u6216\u8005\u5728 CDN \u5c42\u5f00\u542f\u9759\u6001\u9875\u9762\u964d\u7ea7\u8fd4\u56de\uff0c\u964d\u4f4e\u56de\u6e90\u538b\u529b\u3002<\/li>\n<li><strong>\u8bc1\u4e66\u56de\u6eda\u6216\u91cd\u65b0\u90e8\u7f72\uff1a<\/strong>\u82e5 TLS \u7b7e\u53d1\u6216\u914d\u7f6e\u5f02\u5e38\uff0c\u7acb\u5373\u56de\u6eda\u81f3\u4e0a\u4e00\u4e2a\u6709\u6548\u8bc1\u4e66\u5e76\u901a\u77e5 CA\u3002<\/li>\n<\/ul>\n<h3>\u7b2c\u4e09\u9636\u6bb5\uff1a\u5b9a\u4f4d\u6839\u56e0<\/h3>\n<ul>\n<li>\u5206\u6790\u8fb9\u7f18\u65e5\u5fd7\uff1a\u68c0\u67e5 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